1 /*- 2 * Copyright (c) 2016 Mahdi Mokhtari <mokhi64@gmail.com> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 #include <dlfcn.h> 29 #include <atf-c++.hpp> 30 #include <cstdio> 31 #include <cstdlib> 32 #include <thread> 33 34 static FILE *output = NULL; 35 36 struct Foo { 37 Foo() { ATF_REQUIRE(fprintf(output, "Created\n") > 0); } 38 ~Foo() { ATF_REQUIRE(fprintf(output, "Destroyed\n") > 0); } 39 void use() { ATF_REQUIRE(fprintf(output, "Used\n") > 0); } 40 }; 41 42 struct Bar { 43 Bar() {} 44 ~Bar() { 45 thread_local static Foo foo; 46 ATF_REQUIRE(fprintf(output, "DIED\n") > 0); 47 } 48 void use() {} 49 }; 50 51 extern "C" int __cxa_thread_atexit(void (*)(void *), void *, void *); 52 53 static void 54 again(void *arg) 55 { 56 57 __cxa_thread_atexit(again, arg, &output); 58 } 59 60 struct Baz { 61 Baz() {} 62 ~Baz() { 63 again(NULL); 64 } 65 void use() {} 66 }; 67 68 static thread_local Foo f; 69 static thread_local Foo g; 70 static thread_local Bar h; 71 static thread_local Baz e; 72 73 /* 74 * This test must be linked to libpthread. 75 */ 76 ATF_TEST_CASE_WITHOUT_HEAD(cxx__thr); 77 ATF_TEST_CASE_BODY(cxx__thr) 78 { 79 void *libthr_handle; 80 81 /* Avoid coredump during f construction. */ 82 output = stderr; 83 84 libthr_handle = dlopen("libthr.so.3", RTLD_LAZY | RTLD_GLOBAL | 85 RTLD_NOLOAD); 86 ATF_REQUIRE(libthr_handle != NULL); 87 dlclose(libthr_handle); 88 } 89 90 /* 91 * In this test f.use() will test cxa_thread_atexit() in non-threaded mode. 92 * After f.use() main will be threaded and we'll have one additional thread 93 * with its own TLS data. 94 */ 95 ATF_TEST_CASE_WITHOUT_HEAD(cxx__thread_local_before); 96 ATF_TEST_CASE_BODY(cxx__thread_local_before) 97 { 98 static const char out_log[] = "Created\nCreated\nUsed\nCreated\n" 99 "Created\nUsed\nCreated\nDIED\nDestroyed\nDestroyed\nDestroyed\n"; 100 101 ATF_REQUIRE((output = fopen("test_before.txt", "w")) != NULL); 102 103 f.use(); 104 std::thread t([]() { f.use(); }); 105 t.join(); 106 107 fflush(output); 108 109 ATF_REQUIRE(atf::utils::compare_file("test_before.txt", out_log)); 110 } 111 112 /* 113 * In this test, f.use() will test __cxa_thread_atexit() 114 * in threaded mode (but still in main-threaed). 115 */ 116 ATF_TEST_CASE_WITHOUT_HEAD(cxx__thread_local_after); 117 ATF_TEST_CASE_BODY(cxx__thread_local_after) 118 { 119 static const char out_log[] = "Created\nCreated\nUsed\nCreated\n" 120 "DIED\nDestroyed\nDestroyed\nDestroyed\nCreated\nCreated\nUsed\n"; 121 122 ATF_REQUIRE((output = fopen("test_after.txt", "w")) != NULL); 123 124 std::thread t([]() { g.use(); }); 125 t.join(); 126 sleep(1); 127 g.use(); 128 129 fflush(output); 130 131 ATF_REQUIRE(atf::utils::compare_file("test_after.txt", out_log)); 132 } 133 134 /* 135 * In this test, we register a new dtor while dtors are being run 136 * in __cxa_thread_atexit(). 137 */ 138 ATF_TEST_CASE_WITHOUT_HEAD(cxx__thread_local_add_while_calling_dtors); 139 ATF_TEST_CASE_BODY(cxx__thread_local_add_while_calling_dtors) 140 { 141 static const char out_log[] = "Created\nCreated\nCreated\nDIED\n" 142 "Destroyed\nDestroyed\nDestroyed\n"; 143 144 ATF_REQUIRE((output = fopen("test_add_meanwhile.txt", "w")) != NULL); 145 146 std::thread t([]() { h.use(); }); 147 t.join(); 148 sleep(1); 149 150 fflush(output); 151 152 ATF_REQUIRE(atf::utils::compare_file("test_add_meanwhile.txt", out_log)); 153 } 154 155 ATF_TEST_CASE_WITHOUT_HEAD(cxx__thread_inf_dtors); 156 ATF_TEST_CASE_BODY(cxx__thread_inf_dtors) 157 { 158 159 /* 160 * Only added to make isolated run of this test not 161 * coredumping. Construction of Foo objects require filled 162 * output. 163 */ 164 output = stderr; 165 166 std::thread t([]() { e.use(); }); 167 t.join(); 168 } 169 170 ATF_INIT_TEST_CASES(tcs) 171 { 172 173 ATF_ADD_TEST_CASE(tcs, cxx__thr); 174 ATF_ADD_TEST_CASE(tcs, cxx__thread_local_before); 175 ATF_ADD_TEST_CASE(tcs, cxx__thread_local_after); 176 ATF_ADD_TEST_CASE(tcs, cxx__thread_local_add_while_calling_dtors); 177 ATF_ADD_TEST_CASE(tcs, cxx__thread_inf_dtors); 178 } 179